Before the left cabinets go in, I'm going to run the plumbing to where the sink will be. Luckily, I have a bathroom one room down on the same side of the house, so it's just a matter of running drain and supply lines.
I cut some holes in the wall in the bedroom between the fish room and the bathroom, and found exactly where the existing pipes are. I continued cutting that drywall out around the room to the wall behind where the sink will be, making sure I had 1/4" drop per horizontal foot of run. Rather than go old school with copper and a torch, I'll pop on some copper to CPVC fittings, which will make the supply runs much easier. Under the sink I'll run a p-trap and a studor vent.
I then got the 2.5" drain holes cut- I still need to mark and drill the supply line holes above these holes.
Luckily my wife wants wainscotting in that bedroom, that'll save me from having to patch up the holes to a finished quality.